li/cil/oc/common/tileentity/Robot.scala - minecraft/opencomputers - Rivoreo Source Code Repositories

 package li.cil.oc.common.tileentity

 import cpw.mods.fml.relauncher.{SideOnly, Side}
 import li.cil.oc.api.driver.Slot
 import li.cil.oc.api.network._
 import li.cil.oc.client.{PacketSender => ClientPacketSender}
 import li.cil.oc.server.component.GraphicsCard
 import li.cil.oc.server.component.robot.Player
 import li.cil.oc.server.driver.Registry
 import li.cil.oc.server.{PacketSender => ServerPacketSender, driver, component}
 import li.cil.oc.util.ExtendedNBT._
 import li.cil.oc.{Blocks, Config, api, common}
 import net.minecraft.client.Minecraft
 import net.minecraft.entity.player.EntityPlayer
 import net.minecraft.item.ItemStack
 import net.minecraft.nbt.NBTTagCompound
 import net.minecraftforge.common.ForgeDirection
 import scala.Some

 // Implementation note: this tile entity is never directly added to the world.
 // It is always wrapped by a `RobotProxy` tile entity, which forwards any
 // necessary calls to this class. This is done to make moves efficient: when a
 // robot moves we only create a new proxy tile entity, hook the instance of this
 // class that was held by the old proxy to it and can then safely forget the
 // old proxy, which will be cleaned up by Minecraft like any other tile entity.
 class Robot(isRemote: Boolean) extends Computer(isRemote) with Buffer with PowerInformation {
   def this() = this(false)

   var proxy: RobotProxy = _

   // ----------------------------------------------------------------------- //

   override def node = if (isClient) null else computer.node

   override val buffer_ = new common.component.Buffer(this) {
     override def maxResolution = (48, 14)
   }
   override val computer_ = if (isRemote) null else new component.Robot(this)
   val (battery, distributor, gpu, keyboard) = if (isServer) {
     val battery = api.Network.newNode(this, Visibility.Network).withConnector(10000).create()
     val distributor = new component.PowerDistributor(this)
     val gpu = new GraphicsCard.Tier1 {
       override val maxResolution = (48, 14)
     }
     val keyboard = new component.Keyboard(this) {
       override def isUseableByPlayer(p: EntityPlayer) =
         world.getBlockTileEntity(x, y, z) == proxy &&
           p.getDistanceSq(x + 0.5, y + 0.5, z + 0.5) <= 64
     }
     (battery, distributor, gpu, keyboard)
   }
   else (null, null, null, null)

   var selectedSlot = 0

   var equippedItem: Option[ItemStack] = None

   var animationTicksLeft = 0

   var animationTicksTotal = 0

   var moveDirection = ForgeDirection.UNKNOWN

   var swingingTool = false

   var turnAxis = 0

   private lazy val player_ = new Player(this)

   // ----------------------------------------------------------------------- //

   def player(facing: ForgeDirection = facing, side: ForgeDirection = facing) = {
     player_.updatePositionAndRotation(facing, side)
     player_
   }

   def actualSlot(n: Int) = n + 3

   def move(direction: ForgeDirection) = {
     val (ox, oy, oz) = (x, y, z)
     val (nx, ny, nz) = (x + direction.offsetX, y + direction.offsetY, z + direction.offsetZ)
     val blockId = world.getBlockId(nx, ny, nz)
     val metadata = world.getBlockMetadata(nx, ny, nz)
     try {
       // Setting this will make the tile entity created via the following call
       // to setBlock to re-use our "real" instance as the inner object, instead
       // of creating a new one.
       Blocks.robotProxy.moving.set(Some(this))
       // Do *not* immediately send the change to clients to allow checking if it
       // worked before the client is notified so that we can use the same trick on
       // the client by sending a corresponding packet. This also saves us from
       // having to send the complete state again (e.g. screen buffer) each move.
       val created = world.setBlock(nx, ny, nz, Blocks.robotProxy.parent.blockID, Blocks.robotProxy.blockId, 1)
       if (created) {
         assert(world.getBlockTileEntity(nx, ny, nz) == proxy)
         assert(x == nx && y == ny && z == nz)
         world.setBlock(ox, oy, oz, Blocks.robotAfterimage.parent.blockID, Blocks.robotAfterimage.blockId, 1)
         assert(Blocks.blockSpecial.subBlock(world, ox, oy, oz).exists(_ == Blocks.robotAfterimage))
         if (isServer) {
           ServerPacketSender.sendRobotMove(this, ox, oy, oz, direction)
         }
         else {
           // If we broke some replaceable block (like grass) play its break sound.
           if (blockId > 0) {
             world.playAuxSFX(2001, nx, ny, nz, blockId + (metadata << 12))
           }
           world.markBlockForRenderUpdate(ox, oy, oz)
           world.markBlockForRenderUpdate(nx, ny, nz)
         }
         assert(!isInvalid)
       }
       if (created) {
         // Here instead of Lua callback so that it gets triggered on client.
         animateMove(direction, Config.moveDelay)
         checkRedstoneInputChanged()
       }
       created
     }
     finally {
       Blocks.robotProxy.moving.set(None)
     }
   }

   def isAnimatingMove = animationTicksLeft > 0 && moveDirection != ForgeDirection.UNKNOWN

   def isAnimatingSwing = animationTicksLeft > 0 && swingingTool

   def isAnimatingTurn = animationTicksLeft > 0 && turnAxis != 0

   def animateMove(direction: ForgeDirection, duration: Double) =
     setAnimateMove(direction, (duration * 20).toInt)

   def animateSwing(duration: Double) = {
     setAnimateSwing((duration * 20).toInt)
     ServerPacketSender.sendRobotAnimateSwing(this)
   }

   def animateTurn(clockwise: Boolean, duration: Double) = {
     setAnimateTurn(if (clockwise) 1 else -1, (duration * 20).toInt)
     ServerPacketSender.sendRobotAnimateTurn(this)
   }

   def setAnimateMove(direction: ForgeDirection, ticks: Int) {
     animationTicksTotal = ticks
     prepareForAnimation()
     moveDirection = direction
   }

   def setAnimateSwing(ticks: Int) {
     animationTicksTotal = ticks
     prepareForAnimation()
     swingingTool = true
   }

   def setAnimateTurn(axis: Int, ticks: Int) {
     animationTicksTotal = ticks
     prepareForAnimation()
     turnAxis = axis
   }

   private def prepareForAnimation() {
     animationTicksLeft = animationTicksTotal
     moveDirection = ForgeDirection.UNKNOWN
     swingingTool = false
     turnAxis = 0
   }

   // ----------------------------------------------------------------------- //

   override def getRenderBoundingBox =
     getBlockType.getCollisionBoundingBoxFromPool(world, x, y, z).expand(0.5, 0.5, 0.5)

   // ----------------------------------------------------------------------- //

   override def updateEntity() {
     if (node != null && node.network == null) {
       api.Network.joinNewNetwork(node)
     }
     if (animationTicksLeft > 0) {
       animationTicksLeft -= 1
       if (animationTicksLeft == 0) {
         val (ox, oy, oz) = (x - moveDirection.offsetX, y - moveDirection.offsetY, z - moveDirection.offsetZ)
         if (Blocks.blockSpecial.subBlock(world, ox, oy, oz).exists(_ == Blocks.robotAfterimage)) {
           world.setBlockToAir(ox, oy, oz)
         }
       }
       if (isClient) {
         world.markBlockForRenderUpdate(x, y, z)
       }
     }
     super.updateEntity()
     if (isServer) {
       distributor.changeBuffer(10) // just for testing
       distributor.update()
       gpu.update()
     }
   }

   override def validate() {
     super.validate()
     if (isServer) {
       items(0) match {
         case Some(item) => player_.getAttributeMap.applyAttributeModifiers(item.getAttributeModifiers)
         case _ =>
       }
     }
     else {
       ClientPacketSender.sendScreenBufferRequest(this)
       ClientPacketSender.sendRobotStateRequest(this)
     }
   }

   override def invalidate() {
     super.invalidate()
     if (currentGui.isDefined) {
       Minecraft.getMinecraft.displayGuiScreen(null)
     }
   }

   // ----------------------------------------------------------------------- //

   override def readFromNBT(nbt: NBTTagCompound) {
     if (isServer) {
       battery.load(nbt.getCompoundTag(Config.namespace + "battery"))
       buffer.load(nbt.getCompoundTag(Config.namespace + "buffer"))
       distributor.load(nbt.getCompoundTag(Config.namespace + "distributor"))
       gpu.load(nbt.getCompoundTag(Config.namespace + "gpu"))
       keyboard.load(nbt.getCompoundTag(Config.namespace + "keyboard"))
     }
     selectedSlot = nbt.getInteger(Config.namespace + "selectedSlot")
     animationTicksTotal = nbt.getInteger(Config.namespace + "animationTicksTotal")
     animationTicksLeft = nbt.getInteger(Config.namespace + "animationTicksLeft")
     if (animationTicksLeft > 0) {
       moveDirection = ForgeDirection.getOrientation(nbt.getByte(Config.namespace + "moveDirection"))
       swingingTool = nbt.getBoolean(Config.namespace + "swingingTool")
       turnAxis = nbt.getByte(Config.namespace + "turnAxis")
     }
   }

   override def writeToNBT(nbt: NBTTagCompound) {
     if (isServer) {
       nbt.setNewCompoundTag(Config.namespace + "battery", battery.save)
       nbt.setNewCompoundTag(Config.namespace + "buffer", buffer.save)
       nbt.setNewCompoundTag(Config.namespace + "distributor", distributor.save)
       nbt.setNewCompoundTag(Config.namespace + "gpu", gpu.save)
       nbt.setNewCompoundTag(Config.namespace + "keyboard", keyboard.save)
     }
     nbt.setInteger(Config.namespace + "selectedSlot", selectedSlot)
     if (isAnimatingMove || isAnimatingSwing || isAnimatingTurn) {
       nbt.setInteger(Config.namespace + "animationTicksTotal", animationTicksTotal)
       nbt.setInteger(Config.namespace + "animationTicksLeft", animationTicksLeft)
       nbt.setByte(Config.namespace + "moveDirection", moveDirection.ordinal.toByte)
       nbt.setBoolean(Config.namespace + "swingingTool", swingingTool)
       nbt.setByte(Config.namespace + "turnAxis", turnAxis.toByte)
     }
   }

   // ----------------------------------------------------------------------- //

   override def onConnect(node: Node) {
     super.onConnect(node)
     if (node == this.node) {
       computer.node.connect(buffer.node)
       computer.node.connect(distributor.node)
       computer.node.connect(gpu.node)
       distributor.node.connect(battery)
       buffer.node.connect(keyboard.node)
     }
   }

   override def onDisconnect(node: Node) {
     super.onDisconnect(node)
     if (node == this.node) {
       battery.remove()
       buffer.node.remove()
       computer.node.remove()
       distributor.node.remove()
       gpu.node.remove()
       keyboard.node.remove()
     }
   }

   // ----------------------------------------------------------------------- //

   override def installedMemory = 64 * 1024

   def tier = 0

   override def hasRedstoneCard = items(1).fold(false)(driver.item.RedstoneCard.worksWith)

   @SideOnly(Side.CLIENT)
   override protected def markForRenderUpdate() {
     super.markForRenderUpdate()
     currentGui.foreach(_.recompileDisplayLists())
   }

   // ----------------------------------------------------------------------- //

   def getInvName = Config.namespace + "container.Robot"

   def getSizeInventory = 19

   override def getInventoryStackLimit = 64

   override def isUseableByPlayer(player: EntityPlayer) =
     world.getBlockTileEntity(x, y, z) match {
       case t: RobotProxy if t == proxy => player.getDistanceSq(x + 0.5, y + 0.5, z + 0.5) <= 64
       case _ => false
     }

   def isItemValidForSlot(slot: Int, item: ItemStack) = (slot, Registry.driverFor(item)) match {
     case (0, _) => true // Allow anything in the tool slot.
     case (1, Some(driver)) => driver.slot(item) == Slot.Card
     case (2, Some(driver)) => driver.slot(item) == Slot.HardDiskDrive
     case (i, _) if 3 until getSizeInventory contains i => true // Normal inventory.
     case _ => false // Invalid slot.
   }

   override def onInventoryChanged() {
     super.onInventoryChanged()
     if (isServer) {
       computer.signal("inventory_changed")
     }
   }

   override protected def onItemRemoved(slot: Int, item: ItemStack) {
     super.onItemRemoved(slot, item)
     if (isServer) {
       if (slot == 0) {
         player_.getAttributeMap.removeAttributeModifiers(item.getAttributeModifiers)
         ServerPacketSender.sendRobotEquippedItemChange(this, null)
       }
       else if (slot >= actualSlot(0)) {
         computer.signal("inventory_changed", Int.box(slot - actualSlot(0) + 1))
       }
     }
   }

   override protected def onItemAdded(slot: Int, item: ItemStack) {
     if (isServer) {
       if (slot == 0) {
         player_.getAttributeMap.applyAttributeModifiers(item.getAttributeModifiers)
         ServerPacketSender.sendRobotEquippedItemChange(this, getStackInSlot(0))
       }
       else if (slot == 1 || slot == 2) {
         super.onItemAdded(slot, item)
       }
       else if (slot >= actualSlot(0)) {
         computer.signal("inventory_changed", Int.box(slot - actualSlot(0) + 1))
       }
     }
   }
 }
	package li.cil.oc.common.tileentity

	import cpw.mods.fml.relauncher.{SideOnly, Side}
	import li.cil.oc.api.driver.Slot
	import li.cil.oc.api.network._
	import li.cil.oc.client.{PacketSender => ClientPacketSender}
	import li.cil.oc.server.component.GraphicsCard
	import li.cil.oc.server.component.robot.Player
	import li.cil.oc.server.driver.Registry
	import li.cil.oc.server.{PacketSender => ServerPacketSender, driver, component}
	import li.cil.oc.util.ExtendedNBT._
	import li.cil.oc.{Blocks, Config, api, common}
	import net.minecraft.client.Minecraft
	import net.minecraft.entity.player.EntityPlayer
	import net.minecraft.item.ItemStack
	import net.minecraft.nbt.NBTTagCompound
	import net.minecraftforge.common.ForgeDirection
	import scala.Some

	// Implementation note: this tile entity is never directly added to the world.
	// It is always wrapped by a `RobotProxy` tile entity, which forwards any
	// necessary calls to this class. This is done to make moves efficient: when a
	// robot moves we only create a new proxy tile entity, hook the instance of this
	// class that was held by the old proxy to it and can then safely forget the
	// old proxy, which will be cleaned up by Minecraft like any other tile entity.
	class Robot(isRemote: Boolean) extends Computer(isRemote) with Buffer with PowerInformation {
	def this() = this(false)

	var proxy: RobotProxy = _

	// ----------------------------------------------------------------------- //

	override def node = if (isClient) null else computer.node

	override val buffer_ = new common.component.Buffer(this) {
	override def maxResolution = (48, 14)
	}
	override val computer_ = if (isRemote) null else new component.Robot(this)
	val (battery, distributor, gpu, keyboard) = if (isServer) {
	val battery = api.Network.newNode(this, Visibility.Network).withConnector(10000).create()
	val distributor = new component.PowerDistributor(this)
	val gpu = new GraphicsCard.Tier1 {
	override val maxResolution = (48, 14)
	}
	val keyboard = new component.Keyboard(this) {
	override def isUseableByPlayer(p: EntityPlayer) =
	world.getBlockTileEntity(x, y, z) == proxy &&
	p.getDistanceSq(x + 0.5, y + 0.5, z + 0.5) <= 64
	}
	(battery, distributor, gpu, keyboard)
	}
	else (null, null, null, null)

	var selectedSlot = 0

	var equippedItem: Option[ItemStack] = None

	var animationTicksLeft = 0

	var animationTicksTotal = 0

	var moveDirection = ForgeDirection.UNKNOWN

	var swingingTool = false

	var turnAxis = 0

	private lazy val player_ = new Player(this)

	// ----------------------------------------------------------------------- //

	def player(facing: ForgeDirection = facing, side: ForgeDirection = facing) = {
	player_.updatePositionAndRotation(facing, side)
	player_
	}

	def actualSlot(n: Int) = n + 3

	def move(direction: ForgeDirection) = {
	val (ox, oy, oz) = (x, y, z)
	val (nx, ny, nz) = (x + direction.offsetX, y + direction.offsetY, z + direction.offsetZ)
	val blockId = world.getBlockId(nx, ny, nz)
	val metadata = world.getBlockMetadata(nx, ny, nz)
	try {
	// Setting this will make the tile entity created via the following call
	// to setBlock to re-use our "real" instance as the inner object, instead
	// of creating a new one.
	Blocks.robotProxy.moving.set(Some(this))
	// Do not immediately send the change to clients to allow checking if it
	// worked before the client is notified so that we can use the same trick on
	// the client by sending a corresponding packet. This also saves us from
	// having to send the complete state again (e.g. screen buffer) each move.
	val created = world.setBlock(nx, ny, nz, Blocks.robotProxy.parent.blockID, Blocks.robotProxy.blockId, 1)
	if (created) {
	assert(world.getBlockTileEntity(nx, ny, nz) == proxy)
	assert(x == nx && y == ny && z == nz)
	world.setBlock(ox, oy, oz, Blocks.robotAfterimage.parent.blockID, Blocks.robotAfterimage.blockId, 1)
	assert(Blocks.blockSpecial.subBlock(world, ox, oy, oz).exists(_ == Blocks.robotAfterimage))
	if (isServer) {
	ServerPacketSender.sendRobotMove(this, ox, oy, oz, direction)
	}
	else {
	// If we broke some replaceable block (like grass) play its break sound.
	if (blockId > 0) {
	world.playAuxSFX(2001, nx, ny, nz, blockId + (metadata << 12))
	}
	world.markBlockForRenderUpdate(ox, oy, oz)
	world.markBlockForRenderUpdate(nx, ny, nz)
	}
	assert(!isInvalid)
	}
	if (created) {
	// Here instead of Lua callback so that it gets triggered on client.
	animateMove(direction, Config.moveDelay)
	checkRedstoneInputChanged()
	}
	created
	}
	finally {
	Blocks.robotProxy.moving.set(None)
	}
	}

	def isAnimatingMove = animationTicksLeft > 0 && moveDirection != ForgeDirection.UNKNOWN

	def isAnimatingSwing = animationTicksLeft > 0 && swingingTool

	def isAnimatingTurn = animationTicksLeft > 0 && turnAxis != 0

	def animateMove(direction: ForgeDirection, duration: Double) =
	setAnimateMove(direction, (duration * 20).toInt)

	def animateSwing(duration: Double) = {
	setAnimateSwing((duration * 20).toInt)
	ServerPacketSender.sendRobotAnimateSwing(this)
	}

	def animateTurn(clockwise: Boolean, duration: Double) = {
	setAnimateTurn(if (clockwise) 1 else -1, (duration * 20).toInt)
	ServerPacketSender.sendRobotAnimateTurn(this)
	}

	def setAnimateMove(direction: ForgeDirection, ticks: Int) {
	animationTicksTotal = ticks
	prepareForAnimation()
	moveDirection = direction
	}

	def setAnimateSwing(ticks: Int) {
	animationTicksTotal = ticks
	prepareForAnimation()
	swingingTool = true
	}

	def setAnimateTurn(axis: Int, ticks: Int) {
	animationTicksTotal = ticks
	prepareForAnimation()
	turnAxis = axis
	}

	private def prepareForAnimation() {
	animationTicksLeft = animationTicksTotal
	moveDirection = ForgeDirection.UNKNOWN
	swingingTool = false
	turnAxis = 0
	}

	// ----------------------------------------------------------------------- //

	override def getRenderBoundingBox =
	getBlockType.getCollisionBoundingBoxFromPool(world, x, y, z).expand(0.5, 0.5, 0.5)

	// ----------------------------------------------------------------------- //

	override def updateEntity() {
	if (node != null && node.network == null) {
	api.Network.joinNewNetwork(node)
	}
	if (animationTicksLeft > 0) {
	animationTicksLeft -= 1
	if (animationTicksLeft == 0) {
	val (ox, oy, oz) = (x - moveDirection.offsetX, y - moveDirection.offsetY, z - moveDirection.offsetZ)
	if (Blocks.blockSpecial.subBlock(world, ox, oy, oz).exists(_ == Blocks.robotAfterimage)) {
	world.setBlockToAir(ox, oy, oz)
	}
	}
	if (isClient) {
	world.markBlockForRenderUpdate(x, y, z)
	}
	}
	super.updateEntity()
	if (isServer) {
	distributor.changeBuffer(10) // just for testing
	distributor.update()
	gpu.update()
	}
	}

	override def validate() {
	super.validate()
	if (isServer) {
	items(0) match {
	case Some(item) => player_.getAttributeMap.applyAttributeModifiers(item.getAttributeModifiers)
	case _ =>
	}
	}
	else {
	ClientPacketSender.sendScreenBufferRequest(this)
	ClientPacketSender.sendRobotStateRequest(this)
	}
	}

	override def invalidate() {
	super.invalidate()
	if (currentGui.isDefined) {
	Minecraft.getMinecraft.displayGuiScreen(null)
	}
	}

	// ----------------------------------------------------------------------- //

	override def readFromNBT(nbt: NBTTagCompound) {
	if (isServer) {
	battery.load(nbt.getCompoundTag(Config.namespace + "battery"))
	buffer.load(nbt.getCompoundTag(Config.namespace + "buffer"))
	distributor.load(nbt.getCompoundTag(Config.namespace + "distributor"))
	gpu.load(nbt.getCompoundTag(Config.namespace + "gpu"))
	keyboard.load(nbt.getCompoundTag(Config.namespace + "keyboard"))
	}
	selectedSlot = nbt.getInteger(Config.namespace + "selectedSlot")
	animationTicksTotal = nbt.getInteger(Config.namespace + "animationTicksTotal")
	animationTicksLeft = nbt.getInteger(Config.namespace + "animationTicksLeft")
	if (animationTicksLeft > 0) {
	moveDirection = ForgeDirection.getOrientation(nbt.getByte(Config.namespace + "moveDirection"))
	swingingTool = nbt.getBoolean(Config.namespace + "swingingTool")
	turnAxis = nbt.getByte(Config.namespace + "turnAxis")
	}
	}

	override def writeToNBT(nbt: NBTTagCompound) {
	if (isServer) {
	nbt.setNewCompoundTag(Config.namespace + "battery", battery.save)
	nbt.setNewCompoundTag(Config.namespace + "buffer", buffer.save)
	nbt.setNewCompoundTag(Config.namespace + "distributor", distributor.save)
	nbt.setNewCompoundTag(Config.namespace + "gpu", gpu.save)
	nbt.setNewCompoundTag(Config.namespace + "keyboard", keyboard.save)
	}
	nbt.setInteger(Config.namespace + "selectedSlot", selectedSlot)
	if (isAnimatingMove \|\| isAnimatingSwing \|\| isAnimatingTurn) {
	nbt.setInteger(Config.namespace + "animationTicksTotal", animationTicksTotal)
	nbt.setInteger(Config.namespace + "animationTicksLeft", animationTicksLeft)
	nbt.setByte(Config.namespace + "moveDirection", moveDirection.ordinal.toByte)
	nbt.setBoolean(Config.namespace + "swingingTool", swingingTool)
	nbt.setByte(Config.namespace + "turnAxis", turnAxis.toByte)
	}
	}

	// ----------------------------------------------------------------------- //

	override def onConnect(node: Node) {
	super.onConnect(node)
	if (node == this.node) {
	computer.node.connect(buffer.node)
	computer.node.connect(distributor.node)
	computer.node.connect(gpu.node)
	distributor.node.connect(battery)
	buffer.node.connect(keyboard.node)
	}
	}

	override def onDisconnect(node: Node) {
	super.onDisconnect(node)
	if (node == this.node) {
	battery.remove()
	buffer.node.remove()
	computer.node.remove()
	distributor.node.remove()
	gpu.node.remove()
	keyboard.node.remove()
	}
	}

	// ----------------------------------------------------------------------- //

	override def installedMemory = 64 * 1024

	def tier = 0

	override def hasRedstoneCard = items(1).fold(false)(driver.item.RedstoneCard.worksWith)

	@SideOnly(Side.CLIENT)
	override protected def markForRenderUpdate() {
	super.markForRenderUpdate()
	currentGui.foreach(_.recompileDisplayLists())
	}

	// ----------------------------------------------------------------------- //

	def getInvName = Config.namespace + "container.Robot"

	def getSizeInventory = 19

	override def getInventoryStackLimit = 64

	override def isUseableByPlayer(player: EntityPlayer) =
	world.getBlockTileEntity(x, y, z) match {
	case t: RobotProxy if t == proxy => player.getDistanceSq(x + 0.5, y + 0.5, z + 0.5) <= 64
	case _ => false
	}

	def isItemValidForSlot(slot: Int, item: ItemStack) = (slot, Registry.driverFor(item)) match {
	case (0, _) => true // Allow anything in the tool slot.
	case (1, Some(driver)) => driver.slot(item) == Slot.Card
	case (2, Some(driver)) => driver.slot(item) == Slot.HardDiskDrive
	case (i, _) if 3 until getSizeInventory contains i => true // Normal inventory.
	case _ => false // Invalid slot.
	}

	override def onInventoryChanged() {
	super.onInventoryChanged()
	if (isServer) {
	computer.signal("inventory_changed")
	}
	}

	override protected def onItemRemoved(slot: Int, item: ItemStack) {
	super.onItemRemoved(slot, item)
	if (isServer) {
	if (slot == 0) {
	player_.getAttributeMap.removeAttributeModifiers(item.getAttributeModifiers)
	ServerPacketSender.sendRobotEquippedItemChange(this, null)
	}
	else if (slot >= actualSlot(0)) {
	computer.signal("inventory_changed", Int.box(slot - actualSlot(0) + 1))
	}
	}
	}

	override protected def onItemAdded(slot: Int, item: ItemStack) {
	if (isServer) {
	if (slot == 0) {
	player_.getAttributeMap.applyAttributeModifiers(item.getAttributeModifiers)
	ServerPacketSender.sendRobotEquippedItemChange(this, getStackInSlot(0))
	}
	else if (slot == 1 \|\| slot == 2) {
	super.onItemAdded(slot, item)
	}
	else if (slot >= actualSlot(0)) {
	computer.signal("inventory_changed", Int.box(slot - actualSlot(0) + 1))
	}
	}
	}
	}